package com.qiwen.base.config.web;

import org.apache.commons.lang3.StringUtils;
import org.springframework.core.convert.converter.Converter;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
     * Thymeleaf 转换器
     * @author yangxiuchu
     */
    public class StringToDateConverter implements Converter<String, Date> {
        private static final String dateFormat = "yyyy-MM-dd HH:mm:ss";
        private static final String shortDateFormat = "yyyy-MM-dd";

        /**
         * @see org.springframework.core.convert.converter.Converter#convert(java.lang.Object)
         */
        @Override
        public Date convert(String source) {
            if (StringUtils.isBlank(source)) {
                return null;
            }

            source = source.trim();

            try {
                if (source.contains("-")) {
                    SimpleDateFormat formatter;

                    if (source.contains(":")) {
                        formatter = new SimpleDateFormat(dateFormat);
                    } else {
                        formatter = new SimpleDateFormat(shortDateFormat);
                    }

                    Date dtDate = formatter.parse(source);
                    return dtDate;
                } else if (source.matches("^\\d+$")) {
                    Long lDate = new Long(source);
                    return new Date(lDate);
                }
            } catch (Exception e) {
                throw new RuntimeException(String.format("parser %s to Date fail", source));
            }
            throw new RuntimeException(String.format("parser %s to Date fail", source));
        }
    }